device/bluetooth/bluetooth_adapter_chromeos.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "device/bluetooth/bluetooth_adapter_chromeos.h"
   6
   7 #include <string>
   8
   9 #include "base/bind.h"
  10 #include "base/logging.h"
  11 #include "base/metrics/histogram.h"
  12 #include "base/sys_info.h"
  13 #include "chromeos/dbus/bluetooth_adapter_client.h"
  14 #include "chromeos/dbus/bluetooth_device_client.h"
  15 #include "chromeos/dbus/bluetooth_input_client.h"
  16 #include "chromeos/dbus/dbus_thread_manager.h"
  17 #include "device/bluetooth/bluetooth_device.h"
  18 #include "device/bluetooth/bluetooth_device_chromeos.h"
  19
  20 using device::BluetoothAdapter;
  21 using device::BluetoothDevice;
  22
  23 namespace chromeos {
  24
  25 BluetoothAdapterChromeOS::BluetoothAdapterChromeOS()
  26     : weak_ptr_factory_(this) {
  27   DBusThreadManager::Get()->GetBluetoothAdapterClient()->AddObserver(this);
  28   DBusThreadManager::Get()->GetBluetoothDeviceClient()->AddObserver(this);
  29   DBusThreadManager::Get()->GetBluetoothInputClient()->AddObserver(this);
  30
  31   std::vector<dbus::ObjectPath> object_paths =
  32       DBusThreadManager::Get()->GetBluetoothAdapterClient()->GetAdapters();
  33
  34   if (!object_paths.empty()) {
  35     VLOG(1) << object_paths.size() << " Bluetooth adapter(s) available.";
  36     SetAdapter(object_paths[0]);
  37   }
  38 }
  39
  40 BluetoothAdapterChromeOS::~BluetoothAdapterChromeOS() {
  41   DBusThreadManager::Get()->GetBluetoothAdapterClient()->RemoveObserver(this);
  42   DBusThreadManager::Get()->GetBluetoothDeviceClient()->RemoveObserver(this);
  43   DBusThreadManager::Get()->GetBluetoothInputClient()->RemoveObserver(this);
  44 }
  45
  46 void BluetoothAdapterChromeOS::AddObserver(
  47     BluetoothAdapter::Observer* observer) {
  48   DCHECK(observer);
  49   observers_.AddObserver(observer);
  50 }
  51
  52 void BluetoothAdapterChromeOS::RemoveObserver(
  53     BluetoothAdapter::Observer* observer) {
  54   DCHECK(observer);
  55   observers_.RemoveObserver(observer);
  56 }
  57
  58 std::string BluetoothAdapterChromeOS::GetAddress() const {
  59   if (!IsPresent())
  60     return std::string();
  61
  62   BluetoothAdapterClient::Properties* properties =
  63       DBusThreadManager::Get()->GetBluetoothAdapterClient()->
  64           GetProperties(object_path_);
  65   DCHECK(properties);
  66
  67   return properties->address.value();
  68 }
  69
  70 std::string BluetoothAdapterChromeOS::GetName() const {
  71   if (!IsPresent())
  72     return std::string();
  73
  74   BluetoothAdapterClient::Properties* properties =
  75       DBusThreadManager::Get()->GetBluetoothAdapterClient()->
  76           GetProperties(object_path_);
  77   DCHECK(properties);
  78
  79   return properties->alias.value();
  80 }
  81
  82 bool BluetoothAdapterChromeOS::IsInitialized() const {
  83   return true;
  84 }
  85
  86 bool BluetoothAdapterChromeOS::IsPresent() const {
  87   return !object_path_.value().empty();
  88 }
  89
  90 bool BluetoothAdapterChromeOS::IsPowered() const {
  91   if (!IsPresent())
  92     return false;
  93
  94   BluetoothAdapterClient::Properties* properties =
  95       DBusThreadManager::Get()->GetBluetoothAdapterClient()->
  96           GetProperties(object_path_);
  97
  98   return properties->powered.value();
  99 }
 100
 101 void BluetoothAdapterChromeOS::SetPowered(
 102     bool powered,
 103     const base::Closure& callback,
 104     const ErrorCallback& error_callback) {
 105   DBusThreadManager::Get()->GetBluetoothAdapterClient()->
 106       GetProperties(object_path_)->powered.Set(
 107           powered,
 108           base::Bind(&BluetoothAdapterChromeOS::OnSetPowered,
 109                      weak_ptr_factory_.GetWeakPtr(),
 110                      callback,
 111                      error_callback));
 112 }
 113
 114 bool BluetoothAdapterChromeOS::IsDiscovering() const {
 115   if (!IsPresent())
 116     return false;
 117
 118   BluetoothAdapterClient::Properties* properties =
 119       DBusThreadManager::Get()->GetBluetoothAdapterClient()->
 120           GetProperties(object_path_);
 121
 122   return properties->discovering.value();
 123 }
 124
 125 void BluetoothAdapterChromeOS::StartDiscovering(
 126     const base::Closure& callback,
 127     const ErrorCallback& error_callback) {
 128   // BlueZ counts discovery sessions, and permits multiple sessions for a
 129   // single connection, so issue a StartDiscovery() call for every use
 130   // within Chromium for the right behavior.
 131   DBusThreadManager::Get()->GetBluetoothAdapterClient()->
 132       StartDiscovery(
 133           object_path_,
 134           base::Bind(&BluetoothAdapterChromeOS::OnStartDiscovery,
 135                      weak_ptr_factory_.GetWeakPtr(),
 136                      callback),
 137           base::Bind(&BluetoothAdapterChromeOS::OnStartDiscoveryError,
 138                      weak_ptr_factory_.GetWeakPtr(),
 139                      error_callback));
 140 }
 141
 142 void BluetoothAdapterChromeOS::StopDiscovering(
 143     const base::Closure& callback,
 144     const ErrorCallback& error_callback) {
 145   // Inform BlueZ to stop one of our open discovery sessions.
 146   DBusThreadManager::Get()->GetBluetoothAdapterClient()->
 147       StopDiscovery(
 148           object_path_,
 149           base::Bind(&BluetoothAdapterChromeOS::OnStopDiscovery,
 150                      weak_ptr_factory_.GetWeakPtr(),
 151                      callback),
 152           base::Bind(&BluetoothAdapterChromeOS::OnStopDiscoveryError,
 153                      weak_ptr_factory_.GetWeakPtr(),
 154                      error_callback));
 155 }
 156
 157 void BluetoothAdapterChromeOS::ReadLocalOutOfBandPairingData(
 158     const BluetoothAdapter::BluetoothOutOfBandPairingDataCallback& callback,
 159     const ErrorCallback& error_callback) {
 160   error_callback.Run();
 161 }
 162
 163 void BluetoothAdapterChromeOS::AdapterAdded(
 164     const dbus::ObjectPath& object_path) {
 165   // Set the adapter to the newly added adapter only if no adapter is present.
 166   if (!IsPresent())
 167     SetAdapter(object_path);
 168 }
 169
 170 void BluetoothAdapterChromeOS::AdapterRemoved(
 171     const dbus::ObjectPath& object_path) {
 172   if (object_path == object_path_)
 173     RemoveAdapter();
 174 }
 175
 176 void BluetoothAdapterChromeOS::AdapterPropertyChanged(
 177     const dbus::ObjectPath& object_path,
 178     const std::string& property_name) {
 179   if (object_path != object_path_)
 180     return;
 181
 182   BluetoothAdapterClient::Properties* properties =
 183       DBusThreadManager::Get()->GetBluetoothAdapterClient()->
 184           GetProperties(object_path_);
 185
 186   if (property_name == properties->powered.name())
 187     PoweredChanged(properties->powered.value());
 188   else if (property_name == properties->discovering.name())
 189     DiscoveringChanged(properties->discovering.value());
 190 }
 191
 192 void BluetoothAdapterChromeOS::DeviceAdded(
 193   const dbus::ObjectPath& object_path) {
 194   BluetoothDeviceClient::Properties* properties =
 195       DBusThreadManager::Get()->GetBluetoothDeviceClient()->
 196           GetProperties(object_path);
 197   if (properties->adapter.value() != object_path_)
 198     return;
 199
 200   BluetoothDeviceChromeOS* device_chromeos =
 201       new BluetoothDeviceChromeOS(this, object_path);
 202   DCHECK(devices_.find(device_chromeos->GetAddress()) == devices_.end());
 203
 204   devices_[device_chromeos->GetAddress()] = device_chromeos;
 205
 206   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
 207                     DeviceAdded(this, device_chromeos));
 208 }
 209
 210 void BluetoothAdapterChromeOS::DeviceRemoved(
 211     const dbus::ObjectPath& object_path) {
 212   for (DevicesMap::iterator iter = devices_.begin();
 213        iter != devices_.end(); ++iter) {
 214     BluetoothDeviceChromeOS* device_chromeos =
 215         static_cast<BluetoothDeviceChromeOS*>(iter->second);
 216     if (device_chromeos->object_path() == object_path) {
 217       devices_.erase(iter);
 218
 219       FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
 220                         DeviceRemoved(this, device_chromeos));
 221       delete device_chromeos;
 222       return;
 223     }
 224   }
 225 }
 226
 227 void BluetoothAdapterChromeOS::DevicePropertyChanged(
 228     const dbus::ObjectPath& object_path,
 229     const std::string& property_name) {
 230   BluetoothDeviceChromeOS* device_chromeos = GetDeviceWithPath(object_path);
 231   if (!device_chromeos)
 232     return;
 233
 234   BluetoothDeviceClient::Properties* properties =
 235       DBusThreadManager::Get()->GetBluetoothDeviceClient()->
 236           GetProperties(object_path);
 237
 238   if (property_name == properties->bluetooth_class.name() ||
 239       property_name == properties->address.name() ||
 240       property_name == properties->alias.name() ||
 241       property_name == properties->paired.name() ||
 242       property_name == properties->trusted.name() ||
 243       property_name == properties->connected.name() ||
 244       property_name == properties->uuids.name())
 245     NotifyDeviceChanged(device_chromeos);
 246
 247   // UMA connection counting
 248   if (property_name == properties->connected.name()) {
 249     int count = 0;
 250
 251     for (DevicesMap::iterator iter = devices_.begin();
 252          iter != devices_.end(); ++iter) {
 253       if (iter->second->IsPaired() && iter->second->IsConnected())
 254         ++count;
 255     }
 256
 257     UMA_HISTOGRAM_COUNTS_100("Bluetooth.ConnectedDeviceCount", count);
 258   }
 259 }
 260
 261 void BluetoothAdapterChromeOS::InputPropertyChanged(
 262     const dbus::ObjectPath& object_path,
 263     const std::string& property_name) {
 264   BluetoothDeviceChromeOS* device_chromeos = GetDeviceWithPath(object_path);
 265   if (!device_chromeos)
 266     return;
 267
 268   BluetoothInputClient::Properties* properties =
 269       DBusThreadManager::Get()->GetBluetoothInputClient()->
 270           GetProperties(object_path);
 271
 272   // Properties structure can be removed, which triggers a change in the
 273   // BluetoothDevice::IsConnectable() property, as does a change in the
 274   // actual reconnect_mode property.
 275   if (!properties ||
 276       property_name == properties->reconnect_mode.name())
 277     NotifyDeviceChanged(device_chromeos);
 278 }
 279
 280 BluetoothDeviceChromeOS*
 281 BluetoothAdapterChromeOS::GetDeviceWithPath(
 282     const dbus::ObjectPath& object_path) {
 283   for (DevicesMap::iterator iter = devices_.begin();
 284        iter != devices_.end(); ++iter) {
 285     BluetoothDeviceChromeOS* device_chromeos =
 286         static_cast<BluetoothDeviceChromeOS*>(iter->second);
 287     if (device_chromeos->object_path() == object_path)
 288       return device_chromeos;
 289   }
 290
 291   return NULL;
 292 }
 293
 294 void BluetoothAdapterChromeOS::SetAdapter(const dbus::ObjectPath& object_path) {
 295   DCHECK(!IsPresent());
 296   object_path_ = object_path;
 297
 298   VLOG(1) << object_path_.value() << ": using adapter.";
 299
 300   SetAdapterName();
 301
 302   BluetoothAdapterClient::Properties* properties =
 303       DBusThreadManager::Get()->GetBluetoothAdapterClient()->
 304           GetProperties(object_path_);
 305
 306   PresentChanged(true);
 307
 308   if (properties->powered.value())
 309     PoweredChanged(true);
 310   if (properties->discovering.value())
 311     DiscoveringChanged(true);
 312
 313   std::vector<dbus::ObjectPath> device_paths =
 314       DBusThreadManager::Get()->GetBluetoothDeviceClient()->
 315           GetDevicesForAdapter(object_path_);
 316
 317   for (std::vector<dbus::ObjectPath>::iterator iter = device_paths.begin();
 318        iter != device_paths.end(); ++iter) {
 319     BluetoothDeviceChromeOS* device_chromeos =
 320         new BluetoothDeviceChromeOS(this, *iter);
 321
 322     devices_[device_chromeos->GetAddress()] = device_chromeos;
 323
 324     FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
 325                       DeviceAdded(this, device_chromeos));
 326   }
 327 }
 328
 329 void BluetoothAdapterChromeOS::SetAdapterName() {
 330   std::string board = base::SysInfo::GetLsbReleaseBoard();
 331   std::string alias;
 332   if (board.substr(0, 6) == "stumpy") {
 333     alias = "Chromebox";
 334   } else if (board.substr(0, 4) == "link") {
 335     alias = "Chromebook Pixel";
 336   } else {
 337     alias = "Chromebook";
 338   }
 339
 340   DBusThreadManager::Get()->GetBluetoothAdapterClient()->
 341       GetProperties(object_path_)->alias.Set(
 342           alias,
 343           base::Bind(&BluetoothAdapterChromeOS::OnSetAlias,
 344                      weak_ptr_factory_.GetWeakPtr()));
 345 }
 346
 347 void BluetoothAdapterChromeOS::OnSetAlias(bool success) {
 348   LOG_IF(WARNING, !success) << object_path_.value()
 349                             << ": Failed to set adapter alias";
 350 }
 351
 352 void BluetoothAdapterChromeOS::RemoveAdapter() {
 353   DCHECK(IsPresent());
 354   VLOG(1) << object_path_.value() << ": adapter removed.";
 355
 356   BluetoothAdapterClient::Properties* properties =
 357       DBusThreadManager::Get()->GetBluetoothAdapterClient()->
 358           GetProperties(object_path_);
 359
 360   object_path_ = dbus::ObjectPath("");
 361
 362   if (properties->powered.value())
 363     PoweredChanged(false);
 364   if (properties->discovering.value())
 365     DiscoveringChanged(false);
 366
 367   // Copy the devices list here and clear the original so that when we
 368   // send DeviceRemoved(), GetDevices() returns no devices.
 369   DevicesMap devices = devices_;
 370   devices_.clear();
 371
 372   for (DevicesMap::iterator iter = devices.begin();
 373        iter != devices.end(); ++iter) {
 374     FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
 375                       DeviceRemoved(this, iter->second));
 376     delete iter->second;
 377   }
 378
 379   PresentChanged(false);
 380 }
 381
 382 void BluetoothAdapterChromeOS::PoweredChanged(bool powered) {
 383   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
 384                     AdapterPoweredChanged(this, powered));
 385 }
 386
 387 void BluetoothAdapterChromeOS::DiscoveringChanged(
 388     bool discovering) {
 389   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
 390                     AdapterDiscoveringChanged(this, discovering));
 391 }
 392
 393 void BluetoothAdapterChromeOS::PresentChanged(bool present) {
 394   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
 395                     AdapterPresentChanged(this, present));
 396 }
 397
 398 void BluetoothAdapterChromeOS::NotifyDeviceChanged(
 399     BluetoothDeviceChromeOS* device) {
 400   DCHECK(device->adapter_ == this);
 401
 402   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, observers_,
 403                     DeviceChanged(this, device));
 404 }
 405
 406 void BluetoothAdapterChromeOS::OnSetPowered(const base::Closure& callback,
 407                                             const ErrorCallback& error_callback,
 408                                             bool success) {
 409   if (success)
 410     callback.Run();
 411   else
 412     error_callback.Run();
 413 }
 414
 415 void BluetoothAdapterChromeOS::OnStartDiscovery(const base::Closure& callback) {
 416   callback.Run();
 417 }
 418
 419 void BluetoothAdapterChromeOS::OnStartDiscoveryError(
 420     const ErrorCallback& error_callback,
 421     const std::string& error_name,
 422     const std::string& error_message) {
 423   LOG(WARNING) << object_path_.value() << ": Failed to start discovery: "
 424                << error_name << ": " << error_message;
 425   error_callback.Run();
 426 }
 427
 428 void BluetoothAdapterChromeOS::OnStopDiscovery(const base::Closure& callback) {
 429   callback.Run();
 430 }
 431
 432 void BluetoothAdapterChromeOS::OnStopDiscoveryError(
 433     const ErrorCallback& error_callback,
 434     const std::string& error_name,
 435     const std::string& error_message) {
 436   LOG(WARNING) << object_path_.value() << ": Failed to stop discovery: "
 437                << error_name << ": " << error_message;
 438   error_callback.Run();
 439 }
 440
 441 }  // namespace chromeos